your fast food already made meals in recent weeks. if you ma'am much tap water do you drink. or have you had a neon lamp shatter lately how often have you chewed gum in the past four weeks. two or three times in this bill and his fellow investigators ask more than one hundred questions in every household as they try to zero in on the offending foods and objects. urine samples are also collected they're called and taken for analysis to a mobile lab all the hormone mimicking substances that enter a person's body eventual end up in the urine but the levels differ from person to person and household to household so along with all the other data the samples can help identify the sources of those substances back at the u.p.a. in berlin the some pools of tap water in dust blood and urine from the children and adolescents around the lies for the presence of twenty different plastic softeners